Deep-well-pump-oiling system.



A. C. PAULSMEIER.

DEEP WELL PUMP OILING SYSTEM APPLICATION FILED MAY [2. 1914.

Patented Feb. 1, 1916- wwwo artisan %TAT% ALBERT C. PAULSMEIER, OF ALAMEDA, CALIFORNIA, ASSIGNOR- T BYRON JACKSON ERON 'W'ORKS, OF SAN FRANCISCO, CALIFORNIA, A CORPORATION OF CALIFORNIA.

DEEP-WELL-PUMP-OILING SYSTEM.

Specification of Letters Patent.

Patented Feb. 1, 1916..

Application filed May 12, 1914. Serial No. 838,105.

i 071 whom it may concern:

Be it known that ALBERT C. PAULS- iii-nun, a citizen of the United States, residing at Alameda. in the county of Alameda and State of California, have invented new, and useful improvements in Deep-Vell Pump-Uiling Systems, of which the followinn: is a specification.

This invention relates to centrifugal pumps and pertains especially to a pressure teed lubricating"system for deep\vell pumps.

The purpose of the present invention is to provide a pressure teed lubricating system described, which is simple in construction and autoi'natic in ope ation, and which is provided with means l'or trapping and draining any water which might enter the casing.

Further objects will hereinafter appear.

The invention consists of the parts and the construction and combination of parts as hereinafter more fully described and claimed, having reference to the accompanyinc; drawings, in which the figure is a certral, vertical section of a deep-well pump,

showing the application of the invention.

Referring to the drawing, X indicates a deep-well pump ol the centrifugal type; :2 the discharge pipe; 3 the pump shaftrevolved by suitable mcans'notshown; i a tube which is inside of and concentric with and spaced from the pipe '2, and which surrounds the shaft and bearings 5: the spiders 5 sowingto space properly the two pipes Q---')- and maintain the proper alinement of the shaft: 6 a suitably supported annular shell arranged at the top of the well and inclosing an oil chaumer 7. and also supportng thrust bearing Connect ing, chamber T vith a. suitable source oi oil supply under pi Ire, the oil reservoir 10 is a pipe 11 with a valve 12. The upper coupling 13 for pipe or shaft tube "t is lixedtight in the bottom of the chamber 7, and is extended a considerable distance up into the chamber 7 so as to provide a rim over-flow oil feed, as later described. This coupling 13 also forms a bearing for the pump shaft 3. and with the several other bearings 5 is provided throughout the pump with oilducts 14 which permit the oil to be forced down through the tube '-'l from one bearing to an other, and finally fill the tube 4-. Except for this counter-thrust of oil in the pipe or shaft tube 2 no attempt is made to prevent the well water entering he tube'Q under or through the lower sha'lt bearing, which objcction is overcome by the employment oi a foot valve 22 in the bottom suction, as later described. In the absence of the foot valve 22, when the pump is at rest and the oil supply turned on", the tube 2 may lill with water to the level of the well. It is only when the pump is working that the present invention comes into service.

' As previously stated in one of the objects of the invention, it is desired to till the tube 4. with a lubricant, and to maintain'a sutlicient pressure on same to overcome the ex terior water pressure to which the several pipe joints are exposed. This is accomplished in the present instance by placing a piston member 15 within reservoir 10 which is actuated by and adjustable weight 16 mounted upon a lever 17' pivotally secured, as at 1.8, on one side of the reservoir; the weight of the lever being transmitted to the piston through means of link 19..

From the foregoing description it can now be seen that any suitable pressure may be created in the reservoir by adjusting the position of. weight 1b. The oil under pres- .sure is then delis'ered through pipe-11, and

the volume or flow of same is controlled by 'valve 12. Chamber 7, together with con-- nected tube 4-, is subject to a pressure equal to that in reservoir 10, and this is regulated so as to balance the exterior water pressure to which the tube 4 is exposed. Any water that n'light otherwise tend to leak around or through any of the pipe couplings and enter either tube 4 or chamber 7 is prevented by the slight excess of pressure maintained in chamber 7 and tube 4. It any water should enter chamber 7 it will be trapped in the lower portion 0t chamber 7, and be lltl drained off from time to time through valve 20; a suitable form of gage glass being connected with samefor the purpose of detecting the presence of water within chamber 7. Pressure upon the oil within, the reservoir 10 may be created by piston f5 and weight 16, as shown, or by forcing air into the closed tank partly filled with oil.

In order to balance oil and water pressures, even when the pump is standing still and prevent oil entering the well, or vice versa, prevent the well water entering the shaft tube 2, a foot valve 22 is'placed within the suction of the pump, thereby maintaining full water pressure in the pump proper and the space formed by the two concentric tubes, which will be equal to the oil pressure when the inner tube is completely filled up to the top, any oil will thus be pre vented from leaking through the packing and thereby be wasted. The system will in this case not only operate perfectly when the pump is in operation, but also will prevent the waste of oil when standing still. Furthermore, it will positively prevent the water from entering the inner tube, so long as the inner tube is completely filled with oil, which condition may be easily maintained.

The lubricating system constructed and connected as here shown is simple in construction and automatic in operation, as it is only necessary to fill reservoir 10 from time to time, turning valve 12 on when the pump starts and, closing it when the pump stops.

The materials and finish of the several parts of the apparatus are such as the experience and judgment of the manufacturer may dictate.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. In a centrifugal pump, the combination with the shaft, of a tube inclosing the same, an inclosed oil receptacle, shaft bearings in the tube, the uppermost of said bearings projecting into the receptacle and having an overflow duct to bring the tube and receptacle into communication, and the other bearings in the tube having ducts through which oil may pass, and means for maintaining at will an oil pressure in the receptacle and tube and. throughout the length of the latter.

3. In combination with a centrifugalpump and its shaft, a member surrounding said shaft, a discharge pipe connected withthe pump and surrounding said member, means adjacent the suction end of the pump to maintain a constant head of water in the discharge pipe, and means for maintaining an oil'pressure in the member sufficient to exclude the entry of well water therein.

4. In combination with a centrifugal pump having an incased line shaft, a sealed oil receptacle into which the shaft extends and automatic means for maintaining the oil in said receptacle and throughout the length of the shaft casing at a predeter-. mined constant pressure sufiicient to exclude entry of well water into the shaft casing.

5. In combination with a centrifugal pump having an incased line shaft, a sealed oil receptacle into which the shaft extends, automatic means for maintaining the oil in said receptacle and throughout the length of the shaft casing at a predetermined constant pressure suflicient to exclude entry of well water into the shaft casing, and means for enabling any water which may enter the receptacle to be drained therefrom.

6. In combination with a centrifugal pump havingan incased line shaft, a sealed 4 oil receptacle into which the top end of the shaft extends for providing ahead ofoil and for feeding oil into the shaft casing, an oil reservoir communicating with said oil receptacle, and means associated with the reservoir for automatically and constantly maintaining a predetermined pressure on the oil whereby tomaintain such pressure in and throughout the shaft casing to prevent the entry of well water into the casing.

In testimony whereof I have hereunto set my hand in the presence of two subscrib- 1 ing witnesses. I ALBERT C. PAULSMEIER. Witnesses E. L. OsBcnN, H. J. ELLnx. 

